/*
 * Copyright (C) 2009 aileron.cc
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package cc.aileron.anime.logic;

import java.io.File;

import cc.aileron.anime.ApplicationConfig;

import com.google.inject.Inject;

/**
 * @author Aileron
 */
public class ImageFileCounterImpl implements ImageFileCounter
{
    @Override
    public int count()
    {
        final File targetImageDir = new File(config.targetImageDir);
        int count = 0;
        for (final File file : targetImageDir.listFiles())
        {
            final String name = file.getName();
            try
            {
                final int i = Integer.parseInt(name.substring(0,
                        name.lastIndexOf('.')));
                if (count < i)
                {
                    count = i;
                }
            }
            catch (final NumberFormatException e)
            {
            }
        }
        return count;
    }

    /**
     * @param config
     */
    @Inject
    public ImageFileCounterImpl(final ApplicationConfig config)
    {
        this.config = config;
    }

    private final ApplicationConfig config;
}
